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Ditching Tests of Two Models of the Army B-36 AirplaneThe ditching characteristics of the Army B-36 airplane were determined by testing 1/20- and 1/30-scale dynamic models in calm water in Langley tank no. 2 and at the outdoor catapult. The scope of the tests consisted of ditching the models at various conditions of simulated damage, landing attitudes, and speeds, with various flap settings using several degrees of restraint of the flap hinges. The ditching behavior was evaluated from recordings of deceleration, length of run, and motions of the models. The results showed that the airplane should be ditched at an attitude of about 9 deg with flaps full down. The probable ditching behavior will be a smooth run with a maximum longitudinal deceleration of 3g to 4g and a landing run of 4 to 5 fuselage lengths. Structural failure of the underside of the fuselage will not seriously affect the behavior of the airplane.
Document ID
20050028752
Acquisition Source
Langley Research Center
Document Type
Other - NACA Research Memorandum
Authors
Fisher, Lloyd J. (National Advisory Committee for Aeronautics. Langley Aeronautical Lab. Langley Field, VA, United States)
Cederborg, Gibson, A. (National Advisory Committee for Aeronautics. Langley Aeronautical Lab. Langley Field, VA, United States)
Date Acquired
August 22, 2013
Publication Date
March 1, 1948
Subject Category
Aircraft Stability And Control
Report/Patent Number
NACA-RM-SL8B25
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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